.left-nav {
  width: 260px;
  padding-left: 20px;
  font-size: 14px;
  color: #242f35
}
.lt-search {
  border-radius: 20px;
  overflow: hidden;
  display: flex;
  border: 2px solid transparent;
  transition: all 0.5s;
}
.lt-search:hover {
  border-color: #353030;
}
.lt-search-item {
  height: 40px;
  border: none;
  outline: none;
  background: rgba(164,177,191,.15);
}
.lt-search-box {
  padding-left: 20px;
  flex: 1;
}
.lt-search-btn {
  width: 40px;
  height: 40px;
  cursor: pointer;
}
.lt-search-btn a{
  color: #353030;
}
.lt-item {
  margin-bottom: 30px;
}
.ln-item-title {
  font-size: 16px;
  font-weight: 400;
  padding-left: 16px;
  border-left: 4px solid #242f35;
  height: 20px;
  line-height: 20px;
}
.ln-item-descp {
  padding-left: 20px;
}
.ln-list {
  margin: 20px 0 0;
  padding: 0 0 0 20px;
}
.ln-category-item {
  padding: 10px 0;
  font-size: 14px;
  border-bottom: 1px dotted #d8e5f3;
}
.ln-tag-item {
  display: inline-block;
  height: 30px;
  line-height: 30px;
  margin: 0 10px 10px 0;
  padding: 0 10px;
  transition: all 0.5s;
  border: 1px solid #e5e5e5;
  border-radius: 10px;
  font-size: 12px;
  cursor: pointer;
}
.ln-tag-item:hover {
  border-color: #1a1818
}
.ln-articles-item {
  margin-bottom: 10px;
}
.ln-article-link {
  display: flex;
}
.ln-article-thumb {
  width: 80px;
  height: 60px;
  line-height: 60px;
  overflow: hidden;
}
.ln-article-thumb img {
  vertical-align: middle;
}
.ln-article-info {
  flex: 1;
  overflow: hidden;
  padding-left: 20px;
}
.ln-article-title {
  width:100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin: 15px 0 0;
}

.ln-article-time {
  color: #666;
  font-size: 12px;
  margin: 5px 0 0;
}

@media screen and (max-width: 980px) {
  .left-nav {
    width: 30%;
  }
}

@media screen and (max-width: 768px) {
  .left-nav {
    display: none;
  }
}